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Related Experiment Videos

Satiation in cutaneous saltation.

R W Cholewiak

    Sensory Processes
    |December 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Cutaneous saltation, an illusory displacement of touch, was altered by a prior stimulus. This preconditioning stimulus repelled the perceived location of the saltation, suggesting central nervous system involvement.

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    Area of Science:

    • Neuroscience
    • Somatosensory Perception
    • Psychophysics

    Background:

    • Cutaneous saltation is the illusory displacement of a tactile sensation.
    • Previous research suggests that sensory aftereffects can influence subsequent perceptions.

    Purpose of the Study:

    • To investigate how a preconditioning stimulus affects cutaneous saltation.
    • To explore the mechanisms underlying sensory aftereffects in tactile perception.

    Main Methods:

    • A vibratory preconditioning stimulus was applied to a skin locus distant from the saltatory test.
    • The intensity, locus, and number of preconditioning stimuli were varied.
    • The direction and magnitude of the saltatory phantom's displacement were recorded.

    Main Results:

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    • A prior stimulus (preconditioning) repelled the perceived location of cutaneous saltation.
    • The displacement direction was consistently away from the preconditioning stimulus site.
    • The magnitude and recovery rate of the saltation depended on preconditioning parameters.

    Conclusions:

    • The findings support central nervous system mechanisms, rather than peripheral adaptation, in explaining these tactile aftereffects.
    • Cutaneous saltation exhibits properties analogous to figural aftereffects in other sensory modalities.